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Autres articles (46)

  • Installation en mode ferme

    4 février 2011, par

    Le mode ferme permet d’héberger plusieurs sites de type MediaSPIP en n’installant qu’une seule fois son noyau fonctionnel.
    C’est la méthode que nous utilisons sur cette même plateforme.
    L’utilisation en mode ferme nécessite de connaïtre un peu le mécanisme de SPIP contrairement à la version standalone qui ne nécessite pas réellement de connaissances spécifique puisque l’espace privé habituel de SPIP n’est plus utilisé.
    Dans un premier temps, vous devez avoir installé les mêmes fichiers que l’installation (...)

  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

  • HTML5 audio and video support

    13 avril 2011, par

    MediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
    The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
    For older browsers the Flowplayer flash fallback is used.
    MediaSPIP allows for media playback on major mobile platforms with the above (...)

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  • Get x264 options from stream

    29 juillet 2014, par HardRock

    I have a problem with H264 encoding, actually with libx264 :(

    I want to encode series of images from web camera into h264 and send stream to chines DVR. Problem is DVR can’t decode my stream. I tried to adjust (using h264stream_analyzer) SPS and PPS in libx264 to match SPS and PPS headers from "correct stream", produced by other chinese DVR’s and IP cameras. But no luck :( Looks like problem in bitstream.

    My stream and "correct" stream - are both may be converted and played with avconv (ffmpeg), for example.
    Transport is ok. If i send "correct stream" - DVR understand it. Problem in stream.

    One strange thing - "correct stream" contains a lot of 28 and 29 slice types. From h264 specification this is must be "fragmentation" units. But my stream contains only P and I slices, но fragmens.

    So how i can get exact stream encoding parameters from existing sample stream ? It may be difference in x264 versions ?

  • avfilter/vf_libplacebo : whitelist properties on linear blend tex

    7 août, par Niklas Haas
    avfilter/vf_libplacebo : whitelist properties on linear blend tex

    Instead of copying over the entire target and changing a few fields,
    
set the entire struct to a whitelist of safe properties that we want to
    
persist on the intermediate texture.
    

    In particular, this avoids leaking irrelevant state related to the
    
acquire/release callbacks, e.g., which can otherwise cause deadlocks
    
when the same vulkan frame is attempted to be acquired twice.
    • [DH] libavfilter/vf_libplacebo.c

  • FFMPEG : Cannot record audio when using android_camera on Android mobile device or emulator

    12 octobre 2023, par JackE99

    I am attempting to livestream video and audio to my local network from a mobile android device as a use case for the company i work for.

    


    After searching around, I was able to create a video stream using the following command :

    


    ffmpeg -f android_camera -i 0 -c:v libx264 -f flv rtmp://$url

    


    The only issue with this command is in the title, I cannot figure out how to get audio input from the microphone built into the device. I have tried different iterations such as :

    


    Using android_audio

    


    ffmpeg -f android_camera -i 0 -f android_audio -i 0 -c:v libx264 -c:a aac -f flv rtmp://$url

    


    Using mapping

    


    ffmpeg -f android_camera -i 0 -f android_audio -i 0 -map 0:v -map 1:v -c:v libx264 -c:a aac -f flv rtmp://$url

    


    I feel as though I have hit a wall and am unable to progress. And before it is said, yes I do need to use FFMPEG as the command medium and cannot use a prebuilt project/package as the devices have a program already installed to take FFMPEG commands. Any help on this topic is greatly appreciated.

    


    P.S. If you can also help me figure out how to find the name of an Android device's internal microphone, that would be lovely.

    


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